Finding Feature Information

Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.

Information About Verifying Voice-Port Configurations

After configuring the voice ports on your router, there are two simple verifications you can use to check the operation of the telephony handset. There are also eight CLI commands you can use to verify proper operation of the configuration.

How to Verify Voice-Port Configurations

To verify the operability of the analog and digital voice-port configurations on your voice network, complete the following tasks.

SUMMARY STEPS

1. Check for a dial tone.

2. Check for Dual-Tone Multifrequency (DTMF) detection.

3.showvoiceportsummary

4.showvoiceport

5.showrunning-config

6.showcontroller

7.showvoicedsp

8.showvoicecallsummary

9.showcallactivevoice

10.showcallhistoryvoice

DETAILED STEPS

Step 1

Check for a dial tone.

Pick up the handset of an attached telephony device and check for a dial tone.

Step 2

Check for Dual-Tone Multifrequency (DTMF) detection.

If you have dial tone, check for DTMF detection. If the dial tone stops when you dial a digit, then the voice port is probably configured properly.

Step 3

showvoiceportsummary

Use this command to identify the port numbers of voice interfaces installed in your router. For examples of the output, see the "Examples" section.

Step 4

showvoiceport

Use this command to verify voice-port parameter settings. Refer to the table below for the appropriate syntax for your platform. For sample output, see the show voice port Command Examples.

Table 1

Show Voice Port Command Syntax

Platform

Voice Port Type

Command Syntax

Cisco 1750

Analog

showvoiceport [slot/port | summary]

Cisco 2600 series Cisco 3600 series Cisco 3700 series

Analog

showvoiceport [slot/port | summary]

Digital

showvoiceport [slot/port:ds0-group-number | summary]

Cisco MC3810

Analog

showvoiceport [slot/port | summary]

Digital

showvoiceport [slot:ds0-group-number | summary]

Cisco AS5300

Digital

showvoiceport [controller:{ds0-group-number | D}] [summary]

Cisco AS5350 Cisco AS5400 Cisco AS5850

Digital

showvoiceport [slot/controller:{ds0-group-number | D}] [summary]

Cisco AS5800

Digital

showvoiceport {shelf/slot/port:ds0-group-number}

Cisco 7200 series

Digital

showvoiceport {slot/port-adapter:ds0-group-number}

Cisco 7500 series

Digital

showvoiceport {slot/port-adapter/slot:ds0-group-number}

Step 5

showrunning-config

Use this command to verify the codec complexity setting for digital T1/E1 connections. If medium complexity is specified for the voice card, the codec complexity command is not displayed. If high complexity is specified, the codeccomplexityhigh command is displayed. The following example shows output when high complexity is specified:

Use this command to verify that the digital T1/E1 controller is up and that no alarms have been reported, and to display information about clock sources and other controller settings. For output examples, see the show controller Command Examples.

Use this command to display the contents of the active call table, which shows all of the calls currently connected through the router or concentrator. For output examples, see the show call active voice Command Example.

Example:

Router# show call active voice

Step 10

showcallhistoryvoice

Use this command to display the contents of the call history table. To limit the display to the most recent calls connected through this router, use the last keyword and define the number of calls to display with the numberargument. To limit the display to a shortened version of the call history table, use the brief keyword. For output examples, see the show call history voice Command Example.

show voice port Command Examples

Cisco 3600 Series Router Analog EandM Voice Port

The following output is from a Cisco 3600 series router analog E&M voice port:

Router# show voice port1/0
E&M Slot is 1, Sub-unit is 0, Port is 0
Type of VoicePort is E&M
Operation State is unknown
Administrative State is unknown
The Interface Down Failure Cause is 0
Alias is NULL
Noise Regeneration is disabled
Non Linear Processing is disabled
Music On Hold Threshold is Set to 0 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 0 dB
Echo Cancellation is disabled
Echo Cancel Coverage is set to 16ms
Connection Mode is Normal
Connection Number is
Initial Time Out is set to 0 s
Interdigit Time Out is set to 0 s
Analog Info Follows:
Region Tone is set for northamerica
Currently processing none
Maintenance Mode Set to None (not in mtc mode)
Number of signaling protocol errors are 0
Voice card specific Info Follows:
Signal Type is wink-start
Operation Type is 2-wire
Impedance is set to 600r Ohm
E&M Type is unknown
Dial Type is dtmf
In Seizure is inactive
Out Seizure is inactive
Digit Duration Timing is set to 0 ms
InterDigit Duration Timing is set to 0 ms
Pulse Rate Timing is set to 0 pulses/second
InterDigit Pulse Duration Timing is set to 0 ms
Clear Wait Duration Timing is set to 0 ms
Wink Wait Duration Timing is set to 0 ms
Wink Duration Timing is set to 0 ms
Delay Start Timing is set to 0 ms
Delay Duration Timing is set to 0 ms

Cisco 3600 Series Router Analog FXS Voice Port

The following output is from a Cisco 3600 series router analog Foreign Exchange Service (FXS) voice port:

Router# show voice port1
/2
Voice port 1/2 Slot is 1, Port is 2
Type of VoicePort is FXS
Operation State is UP
Administrative State is UP
No Interface Down Failure
Description is not set
Noise Regeneration is enabled
Non Linear Processing is enabled
In Gain is Set to 0 dB
Out Attenuation is Set to 0 dB
Echo Cancellation is enabled
Echo Cancel Coverage is set to 8 ms
Connection Mode is normal
Connection Number is not set
Initial Time Out is set to 10 s
Interdigit Time Out is set to 10 s
Coder Type is g729ar8
Companding Type is u-law
Voice Activity Detection is disabled
Ringing Time Out is 180 s
Wait Release Time Out is 30 s
Nominal Playout Delay is 80 milliseconds
Maximum Playout Delay is 160 milliseconds
Analog Info Follows:
Region Tone is set for northamerica
Currently processing Voice
Maintenance Mode Set to None (not in mtc mode)
Number of signaling protocol errors are 0
Impedance is set to 600r Ohm
Analog interface A-D gain offset = -3 dB
Analog interface D-A gain offset = -3 dB
Voice card specific Info Follows:
Signal Type is loopStart
Ring Frequency is 20 Hz
Hook Status is On Hook
Ring Active Status is inactive
Ring Ground Status is inactive
Tip Ground Status is active
Digit Duration Timing is set to 100 ms
InterDigit Duration Timing is set to 100 ms
Ring Cadence are [20 40] * 100 msec
InterDigit Pulse Duration Timing is set to 500 ms

Cisco 3600 Series Router Digital EandM Voice Port

The following output is from a Cisco 3600 series router digital E&M voice port:

Router# show voice port 1
/0:1
receEive and transMit Slot is 1, Sub-unit is 0, Port is 1
Type of VoicePort is E&M
Operation State is DORMANT
Administrative State is UP
No Interface Down Failure
Description is not set
Noise Regeneration is enabled
Non Linear Processing is enabled
Music On Hold Threshold is Set to -38 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 0 dB
Echo Cancellation is enabled
Echo Cancel Coverage is set to 8 ms
Connection Mode is normal
Connection Number is not set
Initial Time Out is set to 10 s
Interdigit Time Out is set to 10 s
Region Tone is set for US

Cisco AS5300 T1 CAS Voice Port

The following output is from a Cisco AS5300 T1 channel-associated signaling (CAS) voice port:

Router# show voice port
DS0 Group 1:0 - 1:0
Type of VoicePort is CAS
Operation State is DORMANT
Administrative State is UP
No Interface Down Failure
Description is not set
Noise Regeneration is enabled
Non Linear Processing is enabled
Music On Hold Threshold is Set to -38 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 0 dB
Echo Cancellation is enabled
Echo Cancel Coverage is set to 8 ms
Playout-delay Mode is set to default
Playout-delay Nominal is set to 60 ms
Playout-delay Maximum is set to 200 ms
Connection Mode is normal
Connection Number is not set
Initial Time Out is set to 10 s
Interdigit Time Out is set to 10 s
Call-Disconnect Time Out is set to 60 s
Ringing Time Out is set to 180 s
Companding Type is u-law
Region Tone is set for US
Wait Release Time Out is 30 s
Station name None, Station number None
Voice card specific Info Follows:
DS0 channel specific status info:
IN OUT
PORT CH SIG-TYPE OPER STATUS STATUS TIP RING

Cisco 7200 Series Router Digital EandM Voice Port

The following output is from a Cisco 7200 series router digital E&M voice port:

Router# show voice port 1
/0:1
receEive and transMit Slot is 1, Sub-unit is 0, Port is 1 << voice-port 1/0:1
Type of VoicePort is E&M
Operation State is DORMANT
Administrative State is UP
No Interface Down Failure
Description is not set
Noise Regeneration is enabled
Non Linear Processing is enabled
Music On Hold Threshold is Set to -38 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 0 dB
Echo Cancellation is enabled
Echo Cancel Coverage is set to 8 ms
Connection Mode is normal
Connection Number is not set
Initial Time Out is set to 10 s
Interdigit Time Out is set to 10 s
Region Tone is set for US

show controller Command Examples

Cisco 3600 Series Router T1 Controller

The following output is from a Cisco 3600 series router with a T1 controller:

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Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.